First, to fundamentally improve urban air quality, we must first understand the pollution sources that affect urban air, mainly in the following aspects:

1, urban industrial waste gas emissions, the main pollutants are sulfur dioxide, nitrogen oxides and dust;

2. Automobile exhaust, mainly carbon monoxide, nitrogen oxides and volatile organic compounds (VOC), will cause photochemical smog pollution when conditions are ripe;

3. Exhaust gas emitted by catering industry, that is, oil fume.

Second, therefore, to fundamentally improve, it is necessary to block or dredge the above pollution sources, and the main methods are as follows:

1, apply industrial waste gas treatment technology to upgrade the factory waste gas treatment system;

2. Move the heavily polluted factories out of the city and vigorously develop the three major industries;

3, the implementation of automobile exhaust emission quality standards, installation and application of exhaust processor;

4. Develop the automobile industry driven by electricity and introduce policies to encourage the purchase of environmentally-friendly cars;

5. Vigorously develop urban public transport;

6. Increase the demand for catering industry to adopt equipment to recycle and treat oil fume and waste gas;

7. Strengthen urban greening and improve urban greening coverage.

Finally, it should be noted that air pollution has become a cross-regional and cross-border pollution problem due to climate change and air mobility. Only by strengthening regional and international environmental cooperation can the pollution problem be solved more effectively.